Count All Digits in a Number 🔢 | Coding Interview Question
Автор: The Sudhakar Code
Загружено: 2025-12-23
Просмотров: 6
Описание:
In this video, we solve a very common coding interview question:
👉 Count all digits in a number using while loop.
We explain:
✔ Logic step by step
✔ While loop dry run
✔ Edge case for number 0
✔ Time complexity O(log n)
✔ Space complexity O(1)
This problem is frequently asked in:
Coding interviews
Beginner programming tests
Java / C / C++ fundamentals
Examples covered:
54379 → 5
23 → 2
0 → 1
Watch till the end to understand how division by 10 helps count digits efficiently.
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